Comparison Chart

Product	Quadro NVS 290	Quadro NVS 295	Quadro NVS 420	Quadro NVS 450
Bus Interface	PCI Express x16 PCI Express x1	PCI Express x16 PCI Express x1	PCI Express x16 PCI Express x1	PCI Express x16
Memory Size	256MB DDR2	256MB GDDR3	512MB GDDR3²	512MB GDDR3²
Memory Interface	64-bit	64-bit	128-bit (64bit/gpu)	128-bit (64bit/gpu)
Memory Bandwidth	6.4 GB/s	11.2 GB/s	11.2 GB/s per gpu	11.2 GB/s per gpu
Form Factor	SFF¹	SFF¹	SFF¹	ATX Full Height, 1/2 length
CUDA Processor Cores	16	8	16	16
Display Connectors	DMS-59 (1)	DisplayPort (2)	VHDCI (1)	DisplayPort (4)
Max. Displays per Board	2	2	4	4
Max Digital Display Support	1920x1200	2560 x 1600	2560 x 1600	2560 x 1600
Max Analog Display Support	2048x1536	N/A	N/A	N/A
OpenGL	3.0	3.0	3.0	3.0
DirectX	10.0	10.0	10.0	10.0
Shader Model	4.0	4.0	4.0	4.0
CUDA enabled	Yes	Yes	Yes	Yes
Power & Cooling	21W - Passive	23W - Passive	40W - Active⁶	35W - Passive
nView Enabled	Yes	Yes	Yes	Yes
DisplayPort Links	N/A	2	4³	4
DVI Links	2	2⁵	4⁴	4⁵
Analog Displays VGA	2	N/A	N/A	N/A

¹ SFF= Small Form Factor (low profile card)
² 512MB of local frame buffer (256MB GDDR3 memory per GPU)
³ Through VHDCI to Quad DisplayPort dongle
⁴ Through VHDCI to Quad DVI-D (Single Link) dongle
⁵ Through DisplayPort to DVI-D (Single Link) industry standard cables
⁶ High reliability, variable speed fansink